Question juridique clé
Whether the public-law appeal against a procurement-related cantonal decision was admissible under Art. 83(f) LTF.
Solution extraite
The public-law appeal was not available because procurement decisions are excluded unless a principle question is raised; none was shown.
Motifs extraits
The case concerned public procurement, but the appellants admitted that no question of principle was involved. Their reliance on the Market Internal Act did not avoid Art. 83(f) LTF because that provision expressly links to procurement rules.